kc3-lang/libffi/testsuite/libffi.call/overread.c

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• Hash : bb1a84ed
  Author :
  Date : 2025-03-30T12:07:59
  

  Add the "ABI_ATTR" attribute to called functions (#891) (#892)
  
  I accidentally omitted the "ABI_ATTR" attribute, so that the testsuite
  fails when testing the Microsoft ABI.
  
  Fixes: fe203ffbb2bd ("Fix bugs in the x86-64 and x32 target (#887) (#889)")
  
  Signed-off-by: Mikulas Patocka <mikulas@twibright.com>

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• testsuite/libffi.call/overread.c

• /* Area:        ffi_call
     Purpose:     Tests if ffi_call reads data beyond end.
     Limitations: needs mmap.
     PR:          887
     Originator:  Mikulas Patocka <mikulas@twibright.com>  */
  
  /* { dg-do run } */
  
  #include "ffitest.h"
  
  #ifdef __linux__
  #include <sys/mman.h>
  #include <unistd.h>
  
  static int ABI_ATTR fn(unsigned char a, unsigned short b, unsigned int c, unsigned long d)
  {
  	return (int)(a + b + c + d);
  }
  #endif
  
  int main(void)
  {
  #ifdef __linux__
  	ffi_cif cif;
  	ffi_type *args[MAX_ARGS];
  	void *values[MAX_ARGS];
  	ffi_arg rint;
  	char *m;
  	int ps;
  	args[0] = &ffi_type_uchar;
  	args[1] = &ffi_type_ushort;
  	args[2] = &ffi_type_uint;
  	args[3] = &ffi_type_ulong;
  	CHECK(ffi_prep_cif(&cif, ABI_NUM, 4, &ffi_type_sint, args) == FFI_OK);
  	ps = getpagesize();
  	m = mmap(NULL, ps * 3, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
  	CHECK(m != MAP_FAILED);
  	CHECK(mprotect(m, ps, PROT_NONE) == 0);
  	CHECK(mprotect(m + ps * 2, ps, PROT_NONE) == 0);
  	values[0] = m + ps * 2 - sizeof(unsigned char);
  	values[1] = m + ps * 2 - sizeof(unsigned short);
  	values[2] = m + ps * 2 - sizeof(unsigned int);
  	values[3] = m + ps * 2 - sizeof(unsigned long);
  	ffi_call(&cif, FFI_FN(fn), &rint, values);
  	CHECK((int)rint == 0);
  	values[0] = m + ps;
  	values[1] = m + ps;
  	values[2] = m + ps;
  	values[3] = m + ps;
  	ffi_call(&cif, FFI_FN(fn), &rint, values);
  	CHECK((int)rint == 0);
  #endif
  	exit(0);
  }
  

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